US 9,867,263 B2Granted

Method and apparatus for power extraction in a pre-existing AC wiring infrastructure

AssigneeCmoo Systems Ltd.

InventorAvraham Avrahamy

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Abstract

A method and apparatus for extracting power in a switch location, and in a load location for use in a pre-existing infrastructure of switching AC power to a lamp (or other load) via a two terminal switch device. The switch is replaced with a module including a first controlled switch (such as a triac or relay) and a first impedance (such as a capacitor) connected in parallel, and another module including a second controlled switch (such as a triac or relay) and a second impedance (such as a capacitor) connected in parallel, is installed at the load location. In an ‘off’ state where the two controlled switches are in ‘open’ state, current is flowing via the impedances, but not through the load, so that power extractor circuits in the modules, connected in series to the impedances, extract low power for DC powering logic and other loads in the modules.

Claims64

Dependent claims

A system for controlling a powering of a load connected via first and second terminals from an AC power source connected via third and fourth terminals, for use with a wire connecting fifth and sixth terminals, the load is configurable to be in at least distinct first and second states, the system comprising:

a first circuit connected between the fourth and fifth terminals and comprising a first switch controlled to pass current in a close state and to stop current flow in an open state;
and
a second circuit connected to be powered from the sixth and third terminals, the second circuit is further connected to the first and second terminals, and comprising:
a second switch connected between the sixth and first terminals and controlled to pass current via the first terminal to the load in a close state and to stop current via the first terminal to the load in a open state;
and
a programmable logic circuit connected to be powered from the AC power source via the sixth terminal and coupled to control the second switch state,
wherein the programmable logic circuit controls the second switch to toggle between the first and second states in response to sensing a shift of the first switch from the open to the close state.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/600,719Filed 20 May 2017 · continuation
Priority: 6 Jan 2015
Published: US 2017/0086281 A114 Sep 2017
Granted: 9 Jan 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification34 codes

H05B 39/086
By touch control: with possibility of remote control
A01G 7/045
Electric or magnetic or acoustic treatment of plants for promoting growth: with electric lighting
A01G 31/02
Soilless cultivation, e.g. hydroponics: special apparatus therefor
B01D 61/147
Ultrafiltration; Microfiltration: microfiltration

Family

Application62/100,078Us provisional application · filed 6 Jan 2015
PCT/IL2015/051172Parent of this continuation · filed 2 Dec 2015
Application15/359,797Parent of this continuation · filed 23 Nov 2016
US 2017/0265287 A1Pre-grant publication · published 14 Sep 2017
US 2017/0086281 A1Published application
US 9,839,103 B2Related patent
US 9,867,263 B2This patent

From the US filing history. Foreign family members aren’t listed.